Keith Moore wrote: > ... > no. what an ISP advertises to itself and what it advertises > (and accepts) across ISP boundaries are different things.
You assume that an ISP is not paid enough to make sure the upstream is also paid to accept it. > > > The only way to prevent that case is for the ISP to have > the technical > > barrier of ambiguity to push back on the business side of the house. > > there are even better business reasons for filtering such > advertisements > unless the owner of that block of addresses is paying you > specifically > to route them within your network. that, and the threat of > router overload for ISPs that don't filter such > advertisements, should be sufficient. We have an existence proof in the current BGP table that it is not sufficient. Tony -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
